# C4ai Aya Expanse 32b vs Sonar

> Sonar is the stronger model overall, scoring 37.8 to 35.3 on the Noometry Index.

- Canonical page: https://noometry.com/compare/c4ai-aya-expanse-32b-vs-sonar
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- The widest gap is in writing & preference, where Sonar leads 52.6 to 42.4.
- C4ai Aya Expanse 32b has downloadable open weights; the other is API-only.

## Snapshot

| | C4ai Aya Expanse 32b | Sonar |
|---|---|---|
| Provider | Cohere | Perplexity |
| Noometry Index | 35.3 | 37.8 |
| Rank | 216 | 184 |
| Context | 128K | 128K |
| Input $/M | — | $1 |
| Output $/M | — | $1 |
| Weights | Open | Proprietary |

## Coding

- C4ai Aya Expanse 32b: 34.3 (#227)
- Sonar: 35.1 (#217)

| Benchmark | C4ai Aya Expanse 32b | Sonar |
|---|---|---|
| LiveBench Coding | — | 35.1% |
| LMArena Coding | 1197 | — |

## Reasoning

- C4ai Aya Expanse 32b: 22.3 (#183)
- Sonar: 20.3 (#221)

| Benchmark | C4ai Aya Expanse 32b | Sonar |
|---|---|---|
| LiveBench Reasoning | — | 46.3% |
| LMArena Hard Prompts | 1193 | — |
| LiveBench Data Analysis | — | 37.9% |
| LiveBench | — | 46.9% |

## Math

- C4ai Aya Expanse 32b: 31.4 (#195)
- Sonar: 31.3 (#197)

| Benchmark | C4ai Aya Expanse 32b | Sonar |
|---|---|---|
| LiveBench Math | — | 41.6% |
| LMArena Math | 1200 | — |

## Knowledge

- C4ai Aya Expanse 32b: 32.6 (#202)
- Sonar: —

| Benchmark | C4ai Aya Expanse 32b | Sonar |
|---|---|---|
| Vectara Hallucination Rate | 10.9% | — |
| LMArena Expert | 1182 | — |

## Multilingual

- C4ai Aya Expanse 32b: 38.5 (#225)
- Sonar: —

| Benchmark | C4ai Aya Expanse 32b | Sonar |
|---|---|---|
| LMArena Non-English | 1213 | — |
| LMArena Chinese | 1210 | — |
| LMArena French | 1247 | — |
| LMArena German | 1199 | — |
| LMArena Japanese | 1163 | — |
| LMArena Korean | 1158 | — |
| LMArena Russian | 1227 | — |
| LMArena Spanish | 1193 | — |

## Instruction Following

- C4ai Aya Expanse 32b: 62.9 (#232)
- Sonar: 71.5 (#146)

| Benchmark | C4ai Aya Expanse 32b | Sonar |
|---|---|---|
| LiveBench Instruction Following | — | 76.2% |
| LMArena Instruction Following | 1196 | — |

## Long Context

- C4ai Aya Expanse 32b: 37.2 (#215)
- Sonar: —

| Benchmark | C4ai Aya Expanse 32b | Sonar |
|---|---|---|
| LMArena Longer Query | 1228 | — |

## Writing & Preference

- C4ai Aya Expanse 32b: 42.4 (#230)
- Sonar: 52.6 (#166)

| Benchmark | C4ai Aya Expanse 32b | Sonar |
|---|---|---|
| LMArena Text | 1224 | — |
| LMArena Creative Writing | 1200 | — |
| LMArena Multi-Turn | 1190 | — |
| LiveBench Language | — | 44.1% |

## FAQ

### Is C4ai Aya Expanse 32b better than Sonar?

Sonar is the stronger model overall, scoring 37.8 to 35.3 on the Noometry Index.

### Is C4ai Aya Expanse 32b or Sonar better for coding?

They score almost the same on coding (34.3 vs 35.1); test both on your own repository before choosing.

### Which has the bigger context window?

Both accept 128K tokens.

### How many benchmarks do C4ai Aya Expanse 32b and Sonar share?

0 benchmarks have published results for both models. C4ai Aya Expanse 32b has 18 scored results on Noometry and Sonar has 7.